The focal length of a biconvex lens of refractive index 32 is 40 cm. When immersed in a liquid of refractive index 43 its focal length in meters will be :
160
16
1.6
0.8
A
16
B
1.6
C
0.8
D
160
Open in App
Solution
Verified by Toppr
Was this answer helpful?
4
Similar Questions
Q1
The focal length of a biconvex lens of refractive index 3/2 is 18 cm .Its focal length in meters when immersed in a liquid of refractive index 4/3 is
View Solution
Q2
A thin convex lens of refractive index 1.5 has 20cm focal length in air. If the lens is completely immersed in a liquid refractive index 1.6, its focal length will be :
View Solution
Q3
a convex lens immersed in water of refractive index 4/3 has a focal length of 40 cm and the same lens when immersed in a liquid of refractive index 2 has a focal length of -20 cm. the refractive index of the material of the lens is.
View Solution
Q4
The focal length of a thin lens made from the material of refractive index 1.5 is 20cm When it is placed in a liquid of refractive index 4/3, its focal length will be ______ cm.
View Solution
Q5
Focal length of a convex lens of refractive index 1.5 is 2cm. Focal length of lens when immersed in a liquid of refractive index 1.25 will be